Accessibility
WCAG 2.1 Level A
The minimum-viable baseline of the regulation-cited WCAG version. Same warning as Level A in 2.2 — failing it means basic usability is broken.
What it is
The lowest of three conformance levels in WCAG 2.1. Captures the most fundamental requirements that, if missed, leave assistive-tech users locked out entirely.
Why it matters
Nobody targets Level A as a goal — but a few EU procurement docs reference it for narrow product categories. Mostly relevant as an early-warning signal on the path to AA.
Who it applies to
Applies wherever a regulation explicitly cites WCAG 2.1 Level A.
How WQI scores it
Web Quality Index considers this standard satisfied when all of the 4 supporting factors pass.
| # | Factor | Status |
|---|---|---|
| 54 | Image alt text coverage | planned |
| 55 | Heading hierarchy validity | planned |
| 57 | ARIA labels presence and validity | planned |
| 58 | Skip-to-content link | planned |
0 of 4 supporting factors are currently collected. Sites where the remaining 4 haven't been measured will show as partial or unknown on this standard until the data lands.
Related standards
- Superseded by
- WCAG AA
- See also
- WCAG 2.1 AA , WCAG A
Standards that share factors with this one
Auto-computed from overlapping factor tickets in satisfiedBy, excluding standards already listed under "See also" above. Strong overlap suggests these standards rise and fall together when sites are scored.